Screen apparatus and method

Abstract

A screen apparatus for use in a well bore. The apparatus comprises a latch; a first tubular disposed within the latch, the first tubular having an internal retrieving profile; a screen extending from the first tubular, and wherein the screen contains a first portion with a first outer diameter, and a second portion that extends to a second outer diameter, and wherein the first outer diameter is larger that than the second outer diameter. The apparatus further comprises a diverter device operatively attached to an inner portion of the first tubular, and wherein the diverter device contains a passage to divert the fluid to an outer portion of the screen. In one preferred embodiment, the screen comprises a series of longitudinal slots of progressively smaller length. Also, the screen may contain a stepped outer diameter portion and inner diameter portion. A method of cleaning debris is also included.

1 . A down hole apparatus for use in a well bore with a fluid having debris therein, the apparatus comprising: 
 a latching means;    a first tubular member disposed within said latching means, said first tubular member having an internal retrieving profile;    a screen extending from said first tubular member;    a diverter device operatively attached to an inner portion of said first tubular member, and wherein said diverter device contains a passage to divert the fluid to an outer portion of said screen, and wherein the fluid flows from an outer portion of said diverter device into an inner portion of said screen.    
   
   
       2 . The apparatus of  claim 1  further comprising: 
 a second tubular member concentrically disposed about said latching means and engaging said latching means;    a third tubular member attached to said diverter device, and concentrically disposed within said second tubular member;    an annulus created between said screen and said third tubular member and wherein the debris contained with the fluid collects within said annulus.    
   
   
       3 . The apparatus of  claim 2  wherein said latching means comprises: 
 a plurality of protuberances extending from a ring member;    a groove with a first shoulder contained on said first tubular member and wherein said protuberance engages said first shoulder.    
   
   
       4 . The apparatus of  claim 3  wherein said second tubular member contains an internal second shoulder and wherein said latching means further contains a cooperating shoulder abutting said internal second shoulder.  
   
   
       5 . The apparatus of  claim 4  wherein said second tubular member is connected to a work string within the well bore.  
   
   
       6 . The apparatus of  claim 5  wherein said work string has a first end connected to a drill bit device.  
   
   
       7 . The apparatus of  claim 6  further comprising: 
 a pulling tool having a latching dog that is configured to engage said internal retrieving profile, said pulling tool being connected to a wire line within said well bore.    
   
   
       8 . The apparatus of  claim 7  further comprising: 
 a first seal means, configured on an outer portion of said first tubular member, for engaging with the inner portion of said latching means.    
   
   
       9 . The apparatus of  claim 8  further comprising: 
 second seal means, configured on an outer portion of said latching means, for engaging with an inner portion of said second tubular member.    
   
   
       10 . The apparatus of  claim 9  wherein said screen comprises a plurality of longitudinal rods.  
   
   
       11 . A system for filtering debris from a fluid withing a work string comprising: 
 a latch member having at a first end a plurality of protuberances;    a first tubular member disposed within said latch member, said first tubular member containing, on an outer portion, a groove with a shoulder, and wherein said protuberances engages said shoulder;    an internal retrieving profile disposed within an inner portion of said first tubular member;    a screen extending from said first tubular member;    a diverter device operatively attached to said inner portion of said first tubular member, and wherein said diverter device contains a passage to divert the fluid to an outer portion of said screen;    a second tubular member, and wherein said first tubular member is concentrically disposed within said second tubular member;    a third tubular member attached to said diverter device and concentrically disposed within said second tubular member, wherein an annulus is created between said third tubular member and said screen so that the debris collects within said annulus when the fluid flows through said passage into the annulus and through said screen.    
   
   
       12 . The system of  claim 11  wherein said second tubular member contains, on the inner portion, a second shoulder and wherein said latch member contains, on the outer portion, a cooperating shoulder abutting said second shoulder.  
   
   
       13 . The system of  claim 12  wherein said second tubular member is connected to work string.  
   
   
       14 . The system of  claim 13  wherein a first end of said work string is connected to a bit means.  
   
   
       15 . The system of  claim 14  wherein said screen comprises a plurality of longitudinal rods.  
   
   
       16 . The system of  claim 15  further comprising: 
 a pulling tool having a latching dog that is configured to engage said internal retrieving profile.    
   
   
       17 . The system of  claim 12  wherein the screen comprises a series of longitudinal slots that decrease in length along the side of the screen.  
   
   
       18 . The system of  claim 17  wherein the screen contains a first portion with a first outer diameter, and that extends to a second portion having a second outer diameter, and wherein the first outer diameter is larger that than the second outer diameter.  
   
   
       19 . A screen apparatus for use in a well bore containing a fluid having debris, the apparatus comprising: 
 a latching means;    a first tubular member disposed within said latching means, said first tubular member having an internal retrieving profile;    a screen extending from said first tubular member, and wherein the screen contains a first portion with a first outer diameter, that extends to a second portion having a second outer diameter, and wherein the first outer diameter is larger that than the second outer diameter;    a diverter device operatively attached to an inner portion of said first tubular member, and wherein said diverter device contains a passage to divert the fluid to an outer portion of said screen, wherein said screen filters the debris from the fluid.    
   
   
       20 . The apparatus of  claim 19  wherein the screen comprises a series of longitudinal slots that decrease in length along the side of the screen.  
   
   
       21 . The apparatus of  claim 20  further comprising: 
 a second tubular member concentrically disposed about said latching means and engaging said latching means;    a third tubular member attached to said diverter device, and concentrically disposed within said second tubular member;    an annulus created between said screen and said third tubular member and wherein the debris collects within said annulus.    
   
   
       22 . The apparatus of  claim 21  wherein said latching means comprises: 
 a plurality of protuberances;    a groove with a first shoulder contained on said outer portion of said first tubular member and wherein said protuberance engages said first shoulder.    
   
   
       23 . The apparatus of  claim 22  wherein said second tubular member is connected to a work string within the well bore.  
   
   
       24 . The apparatus of  claim 23  wherein said work string has a first end connected to a drill bit device.  
   
   
       25 . The apparatus of  claim 24  further comprising: 
 a pulling tool having a latching dog that is configured to engage said internal retrieving profile, said pulling tool being connected to a wireline within said well bore.    
   
   
       26 . A method of cleaning debris from a fluid within a well bore comprising: 
 providing a screen apparatus, said screen apparatus comprising: a latch member having at a first end a plurality of protuberances; a first tubular disposed within said latch member, said first tubular containing a groove with a shoulder, and wherein said protuberances engages said shoulder; an internal retrieving profile disposed within an inner portion of said first tubular; a screen extending from said first tubular; a diverter device operatively attached to said inner portion of said first tubular, and wherein said diverter device contains a passage to divert the fluid to an outer portion of said screen; a second tubular, and wherein said first tubular is concentrically disposed within said second tubular; a third tubular attached to said diverter device and concentrically disposed within said second tubular so that an annulus is created between said screen and said third tubular;    flowing the fluid through passage of the diverter device;    flowing the fluid into the annulus;    flowing the fluid through the screen;    collecting the debris within the annulus;    terminating the flow of the fluid;    running into the well bore with a pulling tool on a wire line;    engaging a set of dogs on the pulling tool within the internal retrieving profile;    expanding the dogs so that the latch member disengages the first tubular;    pulling out of the well bore with the first tubular, the third tubular and the screen.    
   
   
       27 . The method of  claim 26  further comprising: 
 cleaning the debris from the annulus at the surface.    
   
   
       28 . The method of  claim 27  further comprising: 
 running into the well bore with the first tubular, the third tubular and the screen on the wire line with a running tool;    landing the protuberances of the latch member within the groove of the first tubular;    flowing the fluid through the passage of the diverter device;    flowing the fluid into the annulus;    flowing the fluid through the screen;    collecting the debris within the annulus.    
   
   
       29 . The method of  claim 26  wherein the screen contains a first portion with a first outer diameter, a second portion that has a second outer diameter, and wherein the first outer diameter is larger that than the second outer diameter; and the step of flowing the well fluid through the screen includes creating a larger pressure drop in the annulus about the first portion of the screen than the pressure drop in the annulus about the second portion of the screen.  
   
   
       30 . The method of  claim 29  wherein the screen comprises a series of longitudinal slots that decrease in length along the side of the screen and wherein the step of flowing the fluid through the screen includes flowing the fluid through the longitudinal slots.